Timez Attack, via bigbrainz.com really helps with speed in a fun way because of the game clock. It will also return to the problems your son has trouble with until he gets them down. We are using it...

Get rid of most of your clothes. We only have about 1/2 to 3/4 of a load per person and that is a huge help. Make a list of what you need and shop for it in your closet and laundry. Everything else...